Means for propelling boats.



WITNESSES u C. A. MQGALLISTER. MEANS FOR PROPELLING BOATS.-

urum'rron 1111: JULY 27, 1910.

Patented July 18, 1911.

"mm I Q iflqi gzI Ih;

II}: i :I I II I I I I I I 9 II A 9 I r l 9 I @15- I 9'1 I .v 0-

I,l I

IIIII IH I INVE/ TOR COLUMBIA PLANoullAPl-l 120., WASHINGTONLKS. c,

CLARENCE A. MGCALLISTER, OF MARIETTA, WASHINGTON.

MEANS FOR PROPELLING BOATS.

Specification of Letters Patent.

Patented July 18, 1911.

Application filed July 27, 1910. Serial No. 574,038.

To all whom it may concern:

Be it known that I, CLARENCE A. MGOAL- LISTER, a citizen of the UnitedStates, residing at Marietta, in the county of VVhatcom and State ofWashington, have invented certain new and useful Improvements in Meansfor Propelling Boats; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates to new and useful improvements in means forpropelling boats and my object is to provide a propeller and positionthe same at a point above the water, whereby the boat will be propelledby the action of the propeller on the surrounding atmosphere, and, afurther object is to provide means whereby the boat may be guided byshifting the position of the propeller.

Other objects and advantages will be hereinafter referred to and moreparticularly pointed out in the specification hereunto anneXed.

In the accompanying drawings which are made a part of this application,Figure 1 is a side elevation of a boat partly in section showing myimproved propelling medium attached thereto, and, Fig. 2 is a detailplan view of the propeller shaft and shifting means therefor.

Referring to the drawings in which similar reference numerals designatecorresponding parts throughout the several views, 1 indicates a boat,which may be constructed in the usual or any preferred manner and 2indicates a motor, which is placed within the boat. Attached to theshaft 8 of the motor by means of a universal joint 4 is a tumbling rod5, the opposite end of the rod being attached to a propeller shaft 6 bymeans of a universal joint 7. That end of the propeller shaft adjacentthe universal joint 7 is rotatably mounted in a bearing 8, which is inturn pivotally mounted upon a slide block 9, said slide block beingmounted in a way 10 of a frame 11, said frame being secured in anysuitable manner at a point adjacent the rear end of the boat. Theopposite end of the propeller shaft 6 projects through a bearing 12,which bearing is pivotally secured to a post 13 of the boat and it willbe readily seen that as the slide block is moved lengthwise of the frame11, the bearing 12 will pivot on the post. The extreme outer end of theshaft 6 has a propeller 14: attached thereto and by projecting thepropeller shaft over the upper edge of the boat, the propeller will besupported above the water line. By this construction, it will be readilyseen that the action of the propeller upon the air will be utilized forpropelling the boat instead of placing the propeller in the water and inview of the friction caused by rotating the propeller, the boat will bemoved forwardly or rearwardly according to the way the motor isoperated.

The slide block 9 is operated by attaching cables 15 to opposite sidesthereof, said cables being extended around sheaves 16 and 17 andattached to a drum 18, preferably at the forward end of the boat, theusual form of steering wheel 19 being attached to the drum, whereby thedrum may be readily operated to shift the slide block. In order tocompensate for the movement of the slide block the inner end of thepropeller shaft 6 is formed substantially square in'cross section and isentered into a sleeve 20, which sleeve has an opening to fit the squaredportion of the propeller shaft while the sleeve 20 is slidably mountedin the bearing 8. By this construction, it will be readily seen thatwhen the slide block is moved to either side of the axial center of themotor, the end of the shaft will move outwardly in the sleeve, but atthe same time will rotate therewith. The sleeve 20 will move lengthwisethrough the bearing 8 sufliciently to compensate for the movement of theblock with respect to the shaft 5.

When the boat is in motion and it is desired to change the course of thesame, the steering wheel 19 is rotated, thereby shifting the slide blockto the right or left, which will result in moving the propeller 14c toone side of the axial alinement between the motor and propeller, thepressure of the propeller on the atmosphere causing the boat to swing inthe desired direction.

What I claim is 1. The combination with a boat and a motor mountedtherein, of a propeller extending beyond the rear end of the boat andadjacent the upper edge thereof, a propeller shaft carrying saidpropeller, a bearing for the shaft pivoted to the boat, a sleeve inwhich the inner end of the shaft is slidably mounted, means to connectthe sleeve to the motor, a slide block upon which said sleeve ispivotally mounted and means to move the slide block transversely of theboat whereby the position of the propeller will be changed to guide theboat.

2. The combination with a boat having a motor mounted therein of apropeller, a propeller shaft carrying said propeller, a pivotallymounted. bearing for the shaft, a slide block, a bearing pivoted to saidslide block, a sleeve rotatably mounted in said bearing, said sleevereceiving the inner end of the propeller shaft, means to move said slideblock transversely of the boat, a tumbling rod between the sleeve andmotor and universal joints connecting said tumbling rod to the sleeveand motor.

In testimony whereof I have signed my name to this specification in thepresence of tvvo subscribing),- witnesses.

CLARENCE A. MQCALLI STER.

Vitncsses:

H. M. VVIIITE, E'rrinL CnnisTLn.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. C.

